Transsexual Gene Indentified by Scientists
A gene variant has been identified that could explain female-to-male transexuality.
The variation is found within the gene for an enzyme called cytochrome P17, which is utilised in the metabolism of sex hormones. According to researchers it leads to a high tissue concentrations of the hormones which could then influence the development of the brain.
Clemens Tempfer and his tram at the University of Vienna discovered the variant within DNA samples from 49 female-to-male transsexuals and 102 male-to-female transsexuals as 1,669 samples.
The proportion of male-to-female transsexuals and non-transsexual male control samples carrying the gene was around the same. But with women 44% of transsexuals carry the gene compared to 31% non transsexual women.
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